期刊
NATURE COMMUNICATIONS
卷 7, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms11635
关键词
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资金
- Japan Society for the Promotion of Science (JSPS, Japan) [24591109]
- JST PRESTO
- Banyu Life Science Foundation International
- Takeda Science Foundation
- Japan Society for the Promotion of Science (JSPS)
- Council for Science and Technology Policy (CSTP)
- [26111003]
- [25 5231]
- [l15K19372]
- Grants-in-Aid for Scientific Research [26111003, 24591109, 15K19372, 26110005, 15H04824, 16H06145] Funding Source: KAKEN
In severely hypoxic condition, HIF-1 alpha-mediated induction of Pdk1 was found to regulate glucose oxidation by preventing the entry of pyruvate into the tricarboxylic cycle. Monocyte-derived macrophages, however, encounter a gradual decrease in oxygen availability during its migration process in inflammatory areas. Here we show that HIF-1 alpha-PDK1-mediated metabolic changes occur in mild hypoxia, where mitochondrial cytochrome c oxidase activity is unimpaired, suggesting a mode of glycolytic reprogramming. In primary macrophages, PKM2, a glycolytic enzyme responsible for glycolytic ATP synthesis localizes in filopodia and lammelipodia, where ATP is rapidly consumed during actin remodelling processes. Remarkably, inhibition of glycolytic reprogramming with dichloroacetate significantly impairs macrophage migration in vitro and in vivo. Furthermore, inhibition of the macrophage HIF-1 alpha-PDK1 axis suppresses systemic inflammation, suggesting a potential therapeutic approach for regulating inflammatory processes. Our findings thus demonstrate that adaptive responses in glucose metabolism contribute to macrophage migratory activity.
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